"init arguments (p)" of compile.c indicates a Ruby code that
evaluates multiple assignments that is in method or block
parameters: def foo((m1,m2), (m3,m4), *r, (p1,p2), (p3,p4)); end
The former (init arguments (m)) evaluates the multiple assignments
before rest argument, that are (m1,m2) and (m3,m4). The letter
(init arguments (p)) does ones after rest argument, that are
(p1,p2) and (p3, p4).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

implemented. [ruby-dev:39853]
* ruby.c: --dump=parsetree and --dump=parsetree_with_comment options
added. This is just for debug or research purpose. Note that the
compatibility of these options are not supported at all.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26053 b2dd03c8-39d4-4d8f-98ff-823fe69b080e